Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.

Black Friday is days away. Pick your offers now.Black Friday is days away. Pick your offers now.

Start Sifting
Missed This Deal? Get alerts when similar deals are posted.
expired
expired
Skillful_Pickle | Staff 14.7K Views
Aug 5, 2025 4:23 PM

ECO-WORTHY 3584Wh 12V/280Ah Smart LiFePO4 Battery w/ Bluetooth Monitoring

$320

$440

27% off
+ Free Shippingat eBay
Visit eBay
Good Deal?
42Comments
Save
Share
Deal Details
ECO-WORTHY US via Ebay has ECO-WORTHY 3584Wh 12V/280Ah Smart LiFePO4 Battery w/ Bluetooth Monitoring on sale for $376.45 - 15% when you apply code FIFTEENFORYOU in cart = $319.98. Shipping is free.

Thanks to SD Staff Member Skillful_Pickle for finding this deal.

Features:
  • Bluetooth and remote app monitoring to read the battery voltage, current, battery capacity and other important information
  • 200A BMS with multiple protections, including low-temperature protection (charging cut-off 19.4 F)
  • Supports up to 4 batteries in parallel, providing 1120Ah at 12V ideal for RVs, or 4 in series ideal for 48V solar power systems
  • High-strength metal frame, Grade A cells
  • 6000-15000 long life cycles & 10-Year life
  • 17.8 x 9.37 x 8.7" (63.93 lbs)

Editor's Notes

Written by ValPal2011 | Staff
  • About this deal:

Original Post

Written by Skillful_Pickle | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
ECO-WORTHY US via Ebay has ECO-WORTHY 3584Wh 12V/280Ah Smart LiFePO4 Battery w/ Bluetooth Monitoring on sale for $376.45 - 15% when you apply code FIFTEENFORYOU in cart = $319.98. Shipping is free.

Thanks to SD Staff Member Skillful_Pickle for finding this deal.

Features:
  • Bluetooth and remote app monitoring to read the battery voltage, current, battery capacity and other important information
  • 200A BMS with multiple protections, including low-temperature protection (charging cut-off 19.4 F)
  • Supports up to 4 batteries in parallel, providing 1120Ah at 12V ideal for RVs, or 4 in series ideal for 48V solar power systems
  • High-strength metal frame, Grade A cells
  • 6000-15000 long life cycles & 10-Year life
  • 17.8 x 9.37 x 8.7" (63.93 lbs)

Editor's Notes

Written by ValPal2011 | Staff
  • About this deal:

Original Post

Written by Skillful_Pickle | Staff

Community Voting

Deal Score
+32
Good Deal
Bad Deal
Visit eBay

Top Comments

CyanRaccoon6450
328Comments
60Reputation
Few points.

LifePO4 chemistry is not prone to thermal runaway. It's simply not a concern.

They are fine to use in place of lead acid batteries, they will only be able to charge to about 90-95% of capacity with a lead acid charging profile. That same profile will also not take advantage of how quickly lithium can charge. The biggest downside will be the BMS- on smaller capacity lithium batteries the BMS is usually pretty weak and limited to 10a-20a discharge rates, which is not much when converted to AC. Lead acid are much better at higher discharge rates, but have a much lower capacity.

As far as this battery, yes it is larger (x2) and heavier (x1.5) than a standard lead acid deep cycle, but it has about 5 times the usable capacity, will last 3-4 times as long and recharges much faster. It's a much better use of limited space... But again for high drain applications, lead acid is usually better.
Go to Comment
natataka
98Comments
34Reputation
wow, this is a great deal. these keep dropping. i paid 360 for mine and thought it was a good deal then
Go to Comment

Community Reviews

This 12V 280Ah LiFePO4 battery is being used for off-grid backup power, solar setups, and inverter-based loads, where its big appeal is the large usable capacity for the size. It can run small appliances, lights, routers, and even a small air conditioner for hours, and the Bluetooth version adds monitoring that was missing on earlier units. The battery is heavy and much larger than a standard car battery, so it needs an inverter, proper wiring, and fusing. A few reports also raise concerns about slow transfer timing, lead-acid charger compatibility, and occasional bulging units.

Common Questions (5)

AI-generated summary based on comments from the community. Updated ago

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!

42 Comments

Sign up for a Slickdeals account to remove this ad.

Aug 6, 2025 1:55 PM
10 Comments
Joined Nov 2024
LavenderHeart7251Aug 6, 2025 1:55 PM
10 Comments
Quote from android View quoted comment :
what would be a good cheap inverter?
I have 2 of these batteries hooked up to a 2000 Watt "voltworks" sine inverter from amazon. I run my Ecoflow delta 2 off the inverter. Less headache.
Aug 6, 2025 2:02 PM
24 Comments
Joined Jul 2025
NavyAlpaca522Aug 6, 2025 2:02 PM
24 Comments
This is about the right size to run my small air conditioner for 5-8 hours. I need to crunch some numbers to see when off-grid solar power makes sense in cloudy West Michigan.
Aug 6, 2025 2:44 PM
550 Comments
Joined Nov 2004
mblitchAug 6, 2025 2:44 PM
550 Comments
Quote from XxXGetSomeXxX View quoted comment :
Replacing 2 batteries on a travel trailer. Would this typically be adequate to replace both?
It depends on what you're replacing and the size of the space and what charger you have, or if you need to get a new one.
Aug 6, 2025 2:44 PM
103 Comments
Joined Apr 2016
qiushengxyzAug 6, 2025 2:44 PM
103 Comments
Does this qualify for the tax credit?
Aug 6, 2025 2:44 PM
550 Comments
Joined Nov 2004
mblitchAug 6, 2025 2:44 PM
550 Comments
Quote from chong67 View quoted comment :
How do I use it? It looks like a car battery. How do I charge my device, like a phone, to it? Never seen just plug it to the terminal lead?
When you have absolutely no clue as to what involved, no one is really gonna be able to help you. You need to start doing some basic research on your own to learn about things such as charging, inverting, fuses, etc.
Aug 6, 2025 2:49 PM
5.2K Comments
Joined Apr 2008
worthminingAug 6, 2025 2:49 PM
5.2K Comments
Need a 24v to charge the Anker C1000. Less than 24v it won't charge more than 200w.
Aug 6, 2025 2:51 PM
5.2K Comments
Joined Apr 2008
worthminingAug 6, 2025 2:51 PM
5.2K Comments
Quote from LavenderHeart7251 View quoted comment :
I have 2 of these batteries hooked up to a 2000 Watt "voltworks" sine inverter from amazon. I run my Ecoflow delta 2 off the inverter. Less headache.
Doesn't the Ecoflow delta already has a inverter built-in?

Sign up for a Slickdeals account to remove this ad.

Aug 6, 2025 4:25 PM
17K Comments
Joined Jan 2004
chong67Aug 6, 2025 4:25 PM
17K Comments
Quote from mblitch View quoted comment :
When you have absolutely no clue as to what involved, no one is really gonna be able to help you. You need to start doing some basic research on your own to learn about things such as charging, inverting, fuses, etc.
Now I know it is a real hobby project. I done a few hobby project like build my own computer which I love. Now this project is not so much. LOL!
Aug 6, 2025 4:25 PM
17K Comments
Joined Jan 2004
chong67Aug 6, 2025 4:25 PM
17K Comments
Quote from lobo411 View quoted comment :
You need an inverter. This is for off grid setups, so only really worth it for when you have no other alternatives, or as a hobby.

If you really want to use it, you'll need a ton of stuff to do it safely: inverter, high quality heavy gauge copper wire sized for the maximum draw of your inverter, a fuse or other overload protection device sized the same, etc...

I built a DIY solar setup using batteries like this. It was fun, and I enjoy using it. In 15 years I might even break even on what I paid for it. =)
Thank you for the explanation.
Aug 6, 2025 4:28 PM
213 Comments
Joined Jul 2010
captnsloAug 6, 2025 4:28 PM
213 Comments
Quote from XxXGetSomeXxX View quoted comment :
Replacing 2 batteries on a travel trailer. Would this typically be adequate to replace both?
If you provide some details, people might be able to help.
Aug 6, 2025 5:24 PM
435 Comments
Joined Jul 2005
chivasAug 6, 2025 5:24 PM
435 Comments
Quote from chong67 View quoted comment :
How do I use it? It looks like a car battery. How do I charge my device, like a phone, to it? Never seen just plug it to the terminal lead?
I have a 3000w/6000w peak 12v inverter i've connected to. when we had a power outage, I used it with my microwave and coffee maker (not at the same time).

I do plan on loading this up into my truck and wire the lights up to it and run a solar charger so I can run lights all night for fishing and not worry about draining the truck battery. Not sure how the 280ah is going to effect it but i'm sure it's more than enough.
Aug 6, 2025 5:39 PM
192 Comments
Joined Jan 2008
bigchipAug 6, 2025 5:39 PM
192 Comments
Quote from qiushengxyz View quoted comment :
Does this qualify for the tax credit?
From everything I can tell, yes, as long as you install it in one of your residences. Capacity is >3kW

Further reference: https://www.energystar.gov/about/...technology
Aug 6, 2025 5:47 PM
912 Comments
Joined Jul 2013
imabuvuAug 6, 2025 5:47 PM
912 Comments
Do I need a special solar charger or can I use the same renogy ones I use for lead acid batteries
Aug 6, 2025 5:56 PM
1.8K Comments
Joined Dec 2005
alphawaveAug 6, 2025 5:56 PM
1.8K Comments
Quote from imabuvu View quoted comment :
Do I need a special solar charger or can I use the same renogy ones I use for lead acid batteries
Depends on the 'renogy one'...what model? Is it configurable? Even the $30 PWM Renogy Wanderer can select by battery type, incl. lifepo4.

Sign up for a Slickdeals account to remove this ad.

Aug 6, 2025 6:20 PM
112 Comments
Joined Jun 2004
Bigfoot99Aug 6, 2025 6:20 PM
112 Comments
I've gone through three of these exact batteries. Two different orders, all three arrived bulging (it's a sealed unit). Returned the first two, waiting on response for third. IMHO, product is garbage and support is poor.

#ECO-WORTHLESS.
Last edited by Bigfoot99 August 6, 2025 at 12:22 PM.

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!

Related Searches

Free ShippingTech & ElectronicsTech AccessoriesBatteriesECO-WORTHYeBay